How should security monitoring system do wiring

一, The distribution of power cord: centralized power supply, refers to all the front-end equipment electricity, are unified from the central control room at the        back end. 

There are two cases:  

  1, concentrated grid to the front-end, camera power adapter on the camera, the wiring, the power cord to video signal lines, power cord should be JDG pipe protection .

  2, concentrated to provide dc power supply for the camera to the front, the camera power adapter on the back-end control room, the wiring, The power cable and video cable can be in the same line, the requirements are not strict, PVC pipe can be used. At the same time, pay attention to the relationship between dc transmission distance and wire diameter. The farther the transmission distance is, the larger the wire diameter is required.

二 , For the network camera, its way of setting up the line is obviously more abundant than the traditional analog equipment. However, no matter which transmission mode is used, interference is one of the problems we have to pay attention to. Especially for wired transmission of video signals, signal lines and high-power wires in the same direction transmission is undoubtedly a taboo in the process of wiring, but not for the convenience of construction and the two in the same transmission line tube. If it is impossible to separate the two due to environmental constraints, at least half a meter should be kept apart. Only such planning can better avoid the impact of strong magnetic interference on video transmission, and for the equipment using wireless signal transmission, although there are fewer restrictions on the line. However, the camera itself must avoid the surrounding strong interference sources. At the same time, the insulation between the camera and the ground is ensured. In addition, we should also pay attention to avoid the influence and obstruction of the line on the work of the head. The use of anaerobic copper 0.5 line diameter of the gb network cable, gold plated crystal head, power line within 30 meters with RVV 2*0.5 sheath line, 30-50 meters with RVV 2*0.75 sheath line, 50 meters above with RVV 2*1.0 sheath line, threaded pipe can be generally used with PVC, if buried or explosion-proof galvanized steel pipe.

There are many ways of monitoring wiring, according to the type of monitoring system there are different wiring methods:

 1, analog and SDI system, each monitoring camera has a coaxial video line to pull the video recorder, and the camera needs to pull a power supply line, there is a video line transmission power, video, control signal equipment on the market, the middle wiring only need a video line. 

2. In the network system, each surveillance camera needs a network cable to be pulled to the switch. Power supply can be directly through the network cable (POE), or power cable can be pulled to each camera.